M1.6 earthquake 90 km W of Adak, Alaska

Magnitude

1.6 (ml), micro

Local time

Tue, Feb 28, 2023, 1:51 PM HAST

UTC

2023-02-28 23:51:29 UTC

Depth

6.0 km (3.8 mi), shallow

Epicenter

51.867° N, 177.941° W

Region

Alaska

Tsunami flag

No

Status

Reviewed by a seismologist

Location uncertainty

About 0.4 km horizontally, 0.4 km in depth

Magnitude uncertainty

±0.24

Depth from

From location

Station coverage gap

143°

Stations used

6

After

1. 2.692 km W of Adak, AlaskaTue, Feb 28, 1:55 PM HAST · 1310 days ago · 9 km deep · 2 km away
2. 1.692 km W of Adak, AlaskaTue, Feb 28, 1:58 PM HAST · 1310 days ago · 6 km deep · 3 km away
3. 1.692 km W of Adak, AlaskaTue, Feb 28, 1:58 PM HAST · 1310 days ago · 4 km deep · 3 km away
4. 1.692 km W of Adak, AlaskaTue, Feb 28, 2:01 PM HAST · 1310 days ago · 4 km deep · 3 km away
5. 1.692 km W of Adak, AlaskaTue, Feb 28, 2:04 PM HAST · 1310 days ago · 3 km deep · 3 km away
6. 2.292 km W of Adak, AlaskaTue, Feb 28, 2:08 PM HAST · 1310 days ago · 4 km deep · 3 km away
7. 1.792 km W of Adak, AlaskaTue, Feb 28, 2:26 PM HAST · 1310 days ago · 4 km deep · 3 km away
8. 2.291 km W of Adak, AlaskaTue, Feb 28, 2:54 PM HAST · 1310 days ago · 7 km deep · 2 km away
9. 1.892 km W of Adak, AlaskaTue, Feb 28, 2:55 PM HAST · 1310 days ago · 6 km deep · 2 km away
10. 1.791 km W of Adak, AlaskaTue, Feb 28, 3:03 PM HAST · 1310 days ago · 4 km deep · 1 km away
11. 1.793 km W of Adak, AlaskaTue, Feb 28, 3:32 PM HAST · 1310 days ago · 5 km deep · 3 km away
12. 1.692 km W of Adak, AlaskaTue, Feb 28, 4:05 PM HAST · 1310 days ago · 6 km deep · 2 km away
13. 1.992 km W of Adak, AlaskaTue, Feb 28, 5:28 PM HAST · 1309 days ago · 3 km deep · 3 km away
14. 2.292 km W of Adak, AlaskaTue, Feb 28, 5:31 PM HAST · 1309 days ago · 4 km deep · 2 km away
15. 3.290 km W of Adak, AlaskaTue, Feb 28, 5:46 PM HAST · 1309 days ago · 12 km deep · 1 km away
16. 2.593 km W of Adak, AlaskaTue, Feb 28, 7:17 PM HAST · 1309 days ago · 11 km deep · 7 km away
17. 1.593 km W of Adak, AlaskaTue, Feb 28, 9:57 PM HAST · 1309 days ago · 4 km deep · 4 km away
18. 1.592 km W of Adak, AlaskaWed, Mar 1, 1:04 AM HAST · 1309 days ago · 6 km deep · 3 km away
19. 1.692 km W of Adak, AlaskaThu, Mar 2, 10:32 AM HAST · 1308 days ago · 5 km deep · 3 km away
20. 2.392 km W of Adak, AlaskaThu, Mar 2, 10:39 AM HAST · 1308 days ago · 4 km deep · 3 km away
21. 1.915 km SSW of Adak, AlaskaThu, Mar 2, 8:01 PM HAST · 1307 days ago · 76 km deep · 86 km away
22. 1.691 km W of Adak, AlaskaThu, Mar 2, 10:55 PM HAST · 1307 days ago · 6 km deep · 1 km away
23. 2.0107 km W of Adak, AlaskaFri, Mar 3, 2:18 PM HAST · 1307 days ago · 14 km deep · 18 km away
24. 1.8105 km W of Adak, AlaskaFri, Mar 3, 2:21 PM HAST · 1307 days ago · 17 km deep · 15 km away
25. 2.0106 km W of Adak, AlaskaFri, Mar 3, 2:26 PM HAST · 1307 days ago · 14 km deep · 17 km away
26. 1.7108 km W of Adak, AlaskaFri, Mar 3, 2:31 PM HAST · 1307 days ago · 10 km deep · 19 km away
27. 2.1142 km WSW of Adak, AlaskaFri, Mar 3, 3:16 PM HAST · 1307 days ago · 24 km deep · 72 km away
28. 2.5106 km W of Adak, AlaskaFri, Mar 3, 6:01 PM HAST · 1306 days ago · 19 km deep · 16 km away
29. 1.9Andreanof Islands, Aleutian Islands, AlaskaFri, Mar 3, 8:03 PM HAST · 1306 days ago · 14 km deep · 16 km away
30. 2.0105 km W of Adak, AlaskaSat, Mar 4, 1:32 AM HAST · 1306 days ago · 18 km deep · 15 km away
31. 1.9105 km W of Adak, AlaskaSat, Mar 4, 2:42 AM HAST · 1306 days ago · 17 km deep · 16 km away
32. 2.1106 km W of Adak, AlaskaSat, Mar 4, 3:07 AM HAST · 1306 days ago · 16 km deep · 17 km away
33. 1.6104 km W of Adak, AlaskaSat, Mar 4, 4:47 AM HAST · 1306 days ago · 18 km deep · 15 km away
34. 1.9105 km W of Adak, AlaskaSat, Mar 4, 6:54 AM HAST · 1306 days ago · 18 km deep · 15 km away
35. 1.8104 km W of Adak, AlaskaSat, Mar 4, 8:30 AM HAST · 1306 days ago · 17 km deep · 15 km away
36. 1.6105 km W of Adak, AlaskaSat, Mar 4, 11:34 AM HAST · 1306 days ago · 17 km deep · 16 km away
37. 3.677 km SW of Adak, AlaskaSat, Mar 4, 12:49 PM HAST · 1306 days ago · 34 km deep · 56 km away
38. 1.8104 km W of Adak, AlaskaSat, Mar 4, 1:01 PM HAST · 1306 days ago · 16 km deep · 15 km away
39. 2.1105 km W of Adak, AlaskaSat, Mar 4, 6:24 PM HAST · 1305 days ago · 14 km deep · 16 km away
40. 2.0106 km W of Adak, AlaskaSun, Mar 5, 2:19 AM HAST · 1305 days ago · 13 km deep · 17 km away
41. 3.1129 km SW of Adak, AlaskaSun, Mar 5, 8:58 AM HAST · 1305 days ago · 33 km deep · 80 km away
42. 2.8100 km WSW of Adak, AlaskaSun, Mar 5, 10:34 AM HAST · 1305 days ago · 41 km deep · 40 km away
43. 1.9140 km W of Adak, AlaskaSun, Mar 5, 9:31 PM HAST · 1304 days ago · 12 km deep · 52 km away
44. 1.5104 km W of Adak, AlaskaMon, Mar 6, 12:50 AM HAST · 1304 days ago · 9 km deep · 15 km away
45. 1.6104 km W of Adak, AlaskaMon, Mar 6, 12:56 AM HAST · 1304 days ago · 9 km deep · 15 km away
46. 1.7107 km W of Adak, AlaskaMon, Mar 6, 1:00 AM HAST · 1304 days ago · 7 km deep · 17 km away
47. 1.5104 km W of Adak, AlaskaMon, Mar 6, 1:28 AM HAST · 1304 days ago · 9 km deep · 15 km away
48. 1.6104 km W of Adak, AlaskaMon, Mar 6, 1:30 AM HAST · 1304 days ago · 9 km deep · 15 km away
49. 2.0Andreanof Islands, Aleutian Islands, AlaskaMon, Mar 6, 2:45 AM HAST · 1304 days ago · 9 km deep · 14 km away
50. 1.6104 km W of Adak, AlaskaMon, Mar 6, 4:02 AM HAST · 1304 days ago · 11 km deep · 15 km away
51. 2.3104 km W of Adak, AlaskaMon, Mar 6, 4:47 AM HAST · 1304 days ago · 9 km deep · 15 km away
52. 2.4Andreanof Islands, Aleutian Islands, AlaskaMon, Mar 6, 6:05 AM HAST · 1304 days ago · 9 km deep · 17 km away
53. 1.6104 km W of Adak, AlaskaMon, Mar 6, 6:07 AM HAST · 1304 days ago · 10 km deep · 15 km away
54. 1.8104 km W of Adak, AlaskaMon, Mar 6, 11:01 AM HAST · 1304 days ago · 13 km deep · 15 km away
55. 1.7104 km W of Adak, AlaskaMon, Mar 6, 11:17 AM HAST · 1304 days ago · 9 km deep · 15 km away
56. 1.6103 km W of Adak, AlaskaMon, Mar 6, 11:56 AM HAST · 1304 days ago · 10 km deep · 13 km away
57. 1.6104 km W of Adak, AlaskaMon, Mar 6, 12:24 PM HAST · 1304 days ago · 12 km deep · 14 km away
58. 2.2106 km W of Adak, AlaskaMon, Mar 6, 12:51 PM HAST · 1304 days ago · 11 km deep · 16 km away
59. 1.8104 km W of Adak, AlaskaMon, Mar 6, 1:14 PM HAST · 1304 days ago · 14 km deep · 15 km away
60. 1.7104 km W of Adak, AlaskaMon, Mar 6, 1:59 PM HAST · 1304 days ago · 12 km deep · 15 km away

The first 60 of at least 202.

Before

1. 1.592 km W of Adak, AlaskaTue, Feb 28, 1:36 PM HAST · 1310 days ago · 5 km deep · 3 km away
2. 1.592 km W of Adak, AlaskaTue, Feb 28, 1:35 PM HAST · 1310 days ago · 3 km deep · 3 km away
3. 1.791 km W of Adak, AlaskaTue, Feb 28, 1:28 PM HAST · 1310 days ago · 5 km deep · 2 km away
4. 1.691 km W of Adak, AlaskaTue, Feb 28, 1:24 PM HAST · 1310 days ago · 6 km deep · 2 km away
5. 1.792 km W of Adak, AlaskaTue, Feb 28, 1:21 PM HAST · 1310 days ago · 6 km deep · 3 km away
6. 1.892 km W of Adak, AlaskaTue, Feb 28, 1:01 PM HAST · 1310 days ago · 6 km deep · 3 km away
7. 1.691 km W of Adak, AlaskaTue, Feb 28, 12:59 PM HAST · 1310 days ago · 7 km deep · 2 km away
8. 1.692 km W of Adak, AlaskaTue, Feb 28, 12:53 PM HAST · 1310 days ago · 6 km deep · 3 km away
9. 1.791 km W of Adak, AlaskaTue, Feb 28, 12:52 PM HAST · 1310 days ago · 6 km deep · 1 km away
10. 1.791 km W of Adak, AlaskaTue, Feb 28, 12:51 PM HAST · 1310 days ago · 4 km deep · 2 km away
11. 2.792 km W of Adak, AlaskaTue, Feb 28, 12:49 PM HAST · 1310 days ago · 10 km deep · 4 km away
12. 3.491 km W of Adak, AlaskaTue, Feb 28, 12:43 PM HAST · 1310 days ago · 9 km deep · 2 km away
13. 3.590 km W of Adak, AlaskaTue, Feb 28, 12:41 PM HAST · 1310 days ago · 8 km deep · 0 km away
14. 2.192 km W of Adak, AlaskaTue, Feb 28, 12:01 PM HAST · 1310 days ago · 6 km deep · 2 km away
15. 1.591 km W of Adak, AlaskaTue, Feb 28, 11:34 AM HAST · 1310 days ago · 7 km deep · 2 km away
16. 1.5Andreanof Islands, Aleutian Islands, AlaskaTue, Feb 28, 11:29 AM HAST · 1310 days ago · 5 km deep · 2 km away
17. 1.791 km W of Adak, AlaskaTue, Feb 28, 11:24 AM HAST · 1310 days ago · 6 km deep · 2 km away
18. 2.6Andreanof Islands, Aleutian Islands, AlaskaTue, Feb 28, 11:20 AM HAST · 1310 days ago · 10 km deep · 4 km away
19. 2.2123 km WSW of Adak, AlaskaTue, Feb 28, 3:28 AM HAST · 1310 days ago · 26 km deep · 57 km away
20. 1.689 km W of Adak, AlaskaTue, Feb 28, 3:13 AM HAST · 1310 days ago · 5 km deep · 1 km away

From the USGS Earthquake Hazards Program and its partner networks, event av91777521. Read Wed, Sep 30, 2026, 2:01 PM UTC.